INDEX 



pregnancy. See foetus 

 Prehn, R. T. 159 

 Protozoa, immortality of 27 

 inheritance in 105 



Race, R. R. 151 



Ranson, R. M. 21 



rats, growth and longevity 29 



inheritance in 94-6 



recapitulation, law of 13 

 reproductive value 37, 39, 60-1, 



69 

 Rhine, J. B. 94-5 

 Rowlands, H. A. 75 

 Russell, B. A. W. 74 

 Russell, P. S. 132 



Sanger, R. 151 

 Schinkel, P. G. 149 

 Schmidt, K. P. 22 

 Schmorl, G. 129 

 Schonland, S. 18 

 Schrodinger, E. 14 

 scientific method 71-8 

 selection (see also Darwinism.) 



79-82, 94-6, 102-4, 169 

 senescence 17-43, 44-70, 129 



definition of 22, 55 



evolution of 17-43, 44-70 



measurement 47-55 



Shipley, A. E. 18 



sickle cell disease, trait 125-6 



Silmser, C. R. 148 



Simonsen, M. 177 



Simpson, G. G. 34 



size 31-2, 110-7 



skin, ageing in 52-3 



grafting 143-185 



healing of 130-3, 143-6 



varieties of 84-7 



Sladden, D. 97 



Smith, A. U. 30 



Smith, F. A. 92, 93, 95 



Smith, J. M. 112 



Snell, G. D. 160 



Sonneborn, T. M. 28, 100, 105 



Spencer, H. 79, 112, 113 



Spencer's Law 112-3 



Spiegelman, M. 21, 42 



spinal column 127-30 



squatting facets 88 



stick insects, inheritance in 



97-8 

 Strangeways, T. 27 

 Sturtevant, A. H. 92-3 



Tanner, J. M. 115 

 Tatum, E. L. 102 

 Tausche, F. G. 172 

 Thompson, D'A. W. 11, 118, 



120-1 

 Thompson, J. S. 151 

 Thompson, W. S. 42 

 Thomsen, M. 96 

 Thorpe, W. H. 98 

 Tiegs, O. W. 95 

 time, biological 29 

 Tinbergen, N. 135 

 tolerance, immunological 152, 



160, 175-184 

 tradition 134-142 

 training of bacteria 79-82,102-4 



of rats 94-6 



transformations, bacterial 163, 



166 



Thompsonian 120-1 



transplantation. See Grafting 



Traub, E. 182 



Trotter, W. 140 



twins 147-52, 155, 176-7 



! 





Ti 





190 



